They get rid of Ryan, then they are more stupid than I thought. The show survived Simon, but it will never survive Ryan Seacrest leaving. He was always the glue that held it all together. Or better yet, go to Xfactor. Simon would give him whatever salary he wanted. Idol should just have a last season. I am so over it.

In July, father John McCain was diagnosed with stage 4 glioblastoma, an aggressive form of brain cancer, which also claimed Beau's life.

When the 33-year-old began crying, the politician went over and consoled her, adding:

"There is hope... And if anybody can make it, your dad [can]."

Biden is also optimistic about "breakthroughs that are occurring now," regarding potential treatment options and cures.

"There's a lot of things happening. Any of you who have somebody who is diagnosed with gliobastoma, which is about as bad as it gets, there's breakthroughs that are occurring now... And it can happen tomorrow."